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INTHIST = <a href="%pathto:misc.vl_inthist;">VL_INTHIST</a>(LABELS) computes the integral histogram for
the label map(s) LABELS.
</p><p>
LABELS is a [M,N,L] UINT32 array containing L label maps (one for
each MxN layer). Each label map associates to each of the MxN
pixels one of K labels (a value of 0 denotes no association) with
unitary mass.
</p><p>
INTHIST is the [M,N,K] integral histogram obtained by integrating
the label maps (an integral histogram is just an array of K
integral images, one for each of the K labels).
</p><p>
The total number of labels K is obtained as the maximum value of
LABELS. <a href="%pathto:misc.vl_inthist;">VL_INTHIST</a>(..., 'NUMLABELS', K) specifies the number of
labels explicitly.
</p><p>
<a href="%pathto:misc.vl_inthist;">VL_INTHIST</a>(..., 'MASS', MASSES) specifies a mass MASSES for each
entry of LABELS. MASSES can be either of class UINT32 or DOUBLE,
and the class of INTHIST varies accordingly.
</p><p>
See also: <a href="%pathto:imop.vl_imintegral;">VL_IMINTEGRAL</a>(), VL_SAMPLEINTHIST(), <a href="%pathto:vl_help;">VL_HELP</a>().
</p></div></group>
